Home / 211,789.68-317,591.24-99,501.81

Finding the Fourth Proportional to 211,789.68, 317,591.24 and 99,501.81

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Solution

The fourth proportional to 211,789.68, 317,591.24 and 99,501.81 is: 149,208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,789.68 : 317,591.24 = 99,501.81 : x
  2. Step 2: Convert to fraction form
    211,789.68/317,591.24 = 99,501.81/x
  3. Step 3: Cross multiply
    211,789.68x = 317,591.24 × 99,501.81
  4. Step 4: Simplify right side
    211,789.68x = 31,600,902,722.64
  5. Step 5: Solve for x
    x = 31,600,902,722.64/211,789.68
  6. Step 6: Final answer
    x = 149,208.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.